[seqfan] Re: Seq and First diff use only a 4-digit alphabet

[Eric Angelini]

> What would be the lexicographically first 4-digit seq?

...with zero, it might be:

  seq Z = 1 2 3  13  23  33   133   233   333 ...
1st diff=  1 1 10  10  10  100   100   100

... but without zero, no idea...
Best,
É.